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Proportional Measuring Scales, Photo Reduction Enlargement Tool (DISCONTINUED)

Proportional scales provide a number of times of reduction as well as percentage of enlargement or reduction for photos, artwork, and layouts. Fractions are printed below the inch in a second color. This "slide-rule" proportional scale consists of two circular laminated white vinyl discs. Available in three diameter sizes: 5", 6", and 8". Made in the USA.